Postdoc – Synthesis and up-scaling of high-performance active materials for Na solid-state batteries

Updated: 25 days ago

Your Job:

Future battery technologies are urgently needed to make electromobility and home storage even cheaper, safer and more powerful. Solid-state batteries based on oxide-ceramic Na-ion conductors (electrolyte) are the most promising approach to significantly improve safety and performance. Compared to Li-based systems, Na has clear advantages in terms of cost and sustainability.
However, the electrode active materials, especially for the positive electrode (cathode), still need to be further developed in order to achieve similar performance to current Li-based active materials. Therefore, within the project known materials will be optimized and new materials will be investigated based on theoretical predictions. At the end of the project, the industrially scalable production of a high-performance active material for Na solid-state batteries will be demonstrated. The work is part of a Franco-German project on high-performance batteries and also includes a research visit to France.

Your tasks will mainly include the:

  • Use and improvement of state-of-the-art, industrially established (continuous) synthesis for the production of Na-based cathode active materials
  • Optimization of the process to achieve the highest possible yield and optimized particle morphology
  • Modification of the synthesis to introduce dopants which increase the materials performace
  • Production of model cells based on various solid electrolytes (polymer, ceramic, hybrid) and their electrochemical characterization
  • Optimization of the materials and cells to achieve the highest possible performance in the different cell designs and thus demonstrate the industrial relevance
  • Characterization of the materials, cells and, if necessary, degradation phenomena using advanced analytical methods (including X-ray diffraction, electron microscopy (SEM), secondary ion mass spectroscopy (SIMS), optical emission spectroscopy (OES), electrochemical impedance spectroscopy (EIS))

The candidate can thus gain industry-relevant knowledge about the complete manufacturing process of future battery systems - from materials synthesis to characterization.

Your Profile:

  • Successfully completed scientific university degree (Master) in the field of chemistry, materials science or engineering (chemical engineer) or comparable with PhD
  • Very good knowledge in the field of solid-state chemistry and materials engineering
  • Experience in preparation/ fabrication/ manufacturing processes of inorganic materials.
  • Knowledge in the field of electrochemistry is an advantage
  • Fluency in written and spoken English
  • A high degree of teamwork and flexibility, as well as a willingness to show a high level of commitment

Our Offer:

We work on the very latest issues that impact our society and are offering you the chance to actively help in shaping the change! We support you in your work with:

  • A large research campus with green spaces, offering the best possible means for networking with colleagues and pursuing sports alongside work
  • The work is carried out in a strong, internationally recognized team under Supervision of Dr. Martin Finsterbusch in one of the largest and best-equipped research facilities in Europe
  • You will participate in a consortium of universities and other national and international research institutions funded by the German Federal Ministry of Education and Research
  • You will have the opportunity to participate in project meetings and conferences and to present your results (online and face-to-face events)
  • You can further develop your personal strengths through our extensive training programs and the planned stay abroad with the collaboration partners in France
  • Extensive company health management
  • Ideal conditions for balancing work and private life, as well as a family-friendly corporate policy
  • Flexible work (location) arrangements, e.g. remote work
  • 30 days of annual leave and provision for days off between public holidays and weekends (e.g. between Christmas and New Year)
  • Capital-forming benefits and an employee pension scheme
  • Targeted services for international employees, e.g. through our International Advisory Service


In addition to exciting tasks and a collaborative working atmosphere at Jülich, we have a lot more to offer: https://go.fzj.de/benefits

The position is for a fixed term of 3 years. Salary and social benefits will conform to the provisions of the Collective Agreement for the Public Service (TVöD-Bund), pay group 13, depending on the applicant’s qualifications and the precise nature of the tasks assigned to them.

We welcome applications from people with diverse backgrounds, e.g. in terms of age, gender, disability, sexual orientation / identity, and social, ethnic and religious origin. A diverse and inclusive working environment with equal opportunities in which everyone can realize their potential is important to us.



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